module sms.service {
    exports sms.service;
    exports sms.service.impl;
    requires sms.persistence;
    requires transitive sms.file.store;
    //uses关键字：声明使用sms.persistence.IPersistenceDao接口
    uses sms.persistence.IPersistenceDao;
    provides sms.service.IStudentService with sms.service.impl.StudentServiceImpl;
}